Mercer Water Quality Report
9 cities ranked · Average grade: C- · New Jersey
Avg Score
57.9
Cities Ranked
9
Health Violations
8
PFAS Detected
4
57.9
County avg score
9
Cities ranked
22%
A or B grade
56%
D or F grade
8
Health violations
4
PFAS detected
Grade Distribution
How Mercer cities scored
A
2
22%
Excellent
B
0
0%
Good
C
2
22%
Fair
D
2
22%
Poor
F
3
33%
Failing
Comparison
County vs New Jersey average
▼ 12.5 pts below state average
City Map
Water quality across Mercer
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Mercer
County context
1
Superfund site in Mercer
0
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Mercer
Industrial polluters nearby
Facilities reporting the most surface-water releases in Mercer, 2023.
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
HOVIONE NJ FACILITY EXPANSION HIGHTSTOWN, NJ08520 | — | — |
E R SQUIBB & SONS LLC PRINCETON, NJ08540 | — | — |
TRANE CO TRENTON, NJ08619 | — | — |
ROLLER BEARING CO. OF AMERICA WEST TRENTON, NJ08628 | — | — |
R.E. CARROLL INC. TRENTON, NJ08638 | — | — |
+ 4 more facilities
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites
Superfund sites in Mercer
Superfund sites nearby
Federally tracked hazardous-waste sites within Mercer on the EPA National Priorities List.
- HISTORIC POTTERIES
Source: EPA Superfund National Priorities List
Full Rankings
All 9 cities in Mercer
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Hightstown Boro-1104 | A | 93.2 | 5K | 36 | Health Unresolved | |
| 2 | East Windsor Twp.-1101 | A- | 87 | 25K | 41 | Health Unresolved | |
| 3 | Hopewell Boro-1105 | C | 64.7 | 2K | 335 | Health Unresolved | |
| 4 | Pennington Boro-1108 | C- | 57.1 | 3K | 419 | Unresolved | |
| 5 | Lawrence Twp.-1107 | D | 48.7 | 217K | 138 | Health Unresolved | |
| 6 | Lawrence Twp.-1107 | D | 48.7 | 217K | 138 | Health Unresolved | |
| 7 | Lawrence Twp.-1107 | F | 44.7 | 218K | 356 | Health Unresolved | |
| 8 | Lawrence Twp.-1107 | F | 39.9 | 256K | 188 | Health PFAS Unresolved | |
| 9 | Lawrence Twp.-1107 | F | 37.1 | 227K | 484 | Health PFAS Unresolved |